Releasing VANOS central valve of the exhaust camshaft adjuster
WARNING:
Hot surfaces.
Risk of burning!
Risk of burning!
- Perform all work only on components that have cooled down.
WARNING:
Working on fuel system.
Risk of fire! Danger of explosion!
Risk of fire! Danger of explosion!
- When working on the fuel system, make sure the workstation has sufficient ventilation, e.g., by means of extraction.
- Tightly seal off open lines and connections; collect any leakage fuel directly at the point of exit.
- No fire, sparks, open flames or smoking.
CAUTION:
On releasing high pressure line, fuel may emerge at high speed.
Injury hazard!
Injury hazard!
- Wear suitable personal protective equipment.
- Before performing any installation work, allow cooling system to cool down to less than 40°C.
- Note warnings on cylinder head cover.
NOTE:
TECHNICAL INFORMATION
Collect and dispose of emerging fluids. Observe country-specific waste disposal regulations.
Collect and dispose of emerging fluids. Observe country-specific waste disposal regulations.
Preliminary work
- Refer to BRINGING FRONT COMPARTMENT LID IN THE SERVICE POSITION .
- Refer to DEACTIVATING THE 48 V ELECTRICAL SYSTEM .
- Refer to DISCONNECTING ALL BATTERY GROUND LEADS .
- Refer to REMOVING THE ACOUSTIC COVER .
- Refer to REMOVING THE SEAL FOR THE HOOD REAR .
- Refer to REMOVING THE COVER OF THE ENGINE COMPARTMENT AT THE REAR LEFT .
- Refer to REMOVING THE COVER OF THE REAR RIGHT ENGINE COMPARTMENT .
- Refer to REMOVING LEFT AND RIGHT WIPER ARM .
- Refer to REMOVING THE COWL COVER .
- Refer to REMOVING TRAILING LINK AT SPRING BOLT .
- Refer to REMOVING THE COWL UPPER PART IN THE CENTER .
- Refer to REMOVING ACOUSTIC COVER AT REAR .
- Refer to REMOVING BOTH ACTUATORS .
- Refer to REMOVING ALL IGNITION COILS .
- Refer to REPLACING SPARK PLUGS (540i 2017-2020) , or REMOVING ALL SPARK PLUGS (540i 2021-2022) .
- Refer to REMOVING FUEL DELIVERY LINE .
- Refer to REMOVING THE HIGH PRESSURE LINE BETWEEN THE HIGH PRESSURE PUMP AND THE RAIL .
- Refer to REMOVING HIGH PRESSURE PUMP .
- Refer to REMOVING THE RAIL WITH INJECTORS OF CYLINDERS 1 TO 3 .
- Refer to REMOVING THE RAIL WITH INJECTORS OF CYLINDERS 4 TO 6 .
- Refer to REMOVING THE COVER ON LEFT AND RIGHT IN THE ENGINE COMPARTMENT AT THE TOP .
- Refer to REMOVING BOTH FRONT-END STRUTS .
- Refer to REMOVING FRONT CROSS CONNECTION .
- Refer to REMOVING THE REAR TOP CROSS CONNECTION .
- Refer to REMOVING THE FAN COWL .
- Refer to REMOVING THE INTAKE FILTER HOUSING (TENSION STRUT ON SHOCK TOWER REMOVED) .
- Refer to REMOVING THE RESONATOR WITH THE TOP CLEAN AIR PIPE .
- Refer to REMOVING THE CYLINDER HEAD COVER .
- Refer to REMOVING THE FRONT UNDERBODY PROTECTION OR FRONT THRUST FIELD .
- Refer to REMOVING THE UNDERBODY PROTECTION OF THE STEERING GEAR AND THRUST FIELD RESPECTIVELY .
- Refer to REMOVING THE CENTER UNDERBODY PROTECTION .
- Refer to REMOVING REAR UNDERBODY PROTECTION .
- Refer to BLOCKING ENGINE IN TDC FIRING POSITION .
- Refer to REMOVING CHAIN TENSIONER .
- To release the VANOS central valve (1), use reversible ratchet (2) from special tool 0 496 855
with special tool 2 450 487
.NOTE: The figure shows the rear of the engine.
- Release the VANOS central valve (1) of the exhaust camshaft adjuster.
